摘要
在纤维模型的基础上，直接由材料的非线性本构关系建立了钢筋混凝土双向压弯构件的非线性计算模型。文中首先导出了双向压弯构件考虑 P－Δ二阶效应的侧向位移计算公式；其次，采用 Matlab语言编制了相应的非线性静力全过程分析程序；最后，通过数值分析，研究了双向压弯构件非线性性能的影响因素 (侧向力角度、轴压比、剪跨比、截面尺寸、体积配箍率等 )，并检验了三种收敛准则的有效性。
Based on fiber model, nonlinear computation model of bi－ directional compression－ bending reinforced concrete members is established directly from nonlinear material constitutive laws. Firstly, the formulae of lateral displacement of bi－ directional compression－ bending member are put forward which take P－Δ effect into account. Secondly, a nonlinear static complete－ process analysis program is made by using Matlab language. Finally, through numerical analysis, some elements are studied that put effects on the mechanic property of bi－ directional compression－ bending member, such as lateral force angle, normalized compressive stress, shear span ratio, cross section size, volumetric stirrup ratio and so on. And the validity of three convergence criteria is also checked in the program.
出处
《哈尔滨建筑大学学报》
2000年第4期1-7,共7页
Journal of Harbin University of Civil Engineering and Architecture
基金
国家杰出青年科学基金资助项目!( 59625815)
关键词
钢筋混凝土构件
双向压弯
非线性静力分析
reinforced concrete
bi－ directional compression－ bending
nonlinear static analysis； fiber model
P－Δ effect
